District of



(No Model.)

A. A. PETERKIN.

4 PIPE WRENOH. No. 441,020. Patented Nov. 18, 1890.

//V VE/V TOR 6222062 Q. Eiz'lz); BY

ATTORNEY.

UNITED STATES ATENT FFicE.

ANCEL A. PETERKIN, OF FORT MOTTE, SOUTH CAROLINA, ASSIGNOR OF ONE-HALFTO NEVVELL K. EARLE, OF IVASHINGTON, DISTRICT OF COLUMBIA.

PIPE-WRENCH.

SPECIFICATION. forming part of Letters Patent No. 441,020, datedNovember 18, 1890.

' Application filed January 3, 1890- Serial No. 335,771. (No model.)

To all whom, it may concern.-

Be it known that I, ANGEL A. PETERKIN, of Fort Motte, in the county ofOrangeburg and State of South Carolina, have invented certain new anduseful Improvements in Pipe- XVrenches; and I do hereby declare that thefollowing is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to the letters of reference marked thereon, which form a part ofthis specification.

This invention has relation to that class known as pipe-wrenches, andhas for its object to provide an improved wrench to grip a pipe in suchmanner as to hold it firmly from twisting or turning either when to beunscrewed, screwed up, or when a thread is to be out upon its ends.

This invention consists in certain novel features of construction and incombinations of parts more fully described hereinafter, and particularlypointed out in the claims.

In the accompanying drawings, Figure 1 represents my invention in use,showing a pipe within its grip. Fig. 2 is an edge View of the handle,link, and pipe; and Fig. 3 is a plan view in perspective. Fig. 4: is aview showing the tongue-piece tapering from the pivot end to the freeend,the object being to increase its motion when the wrench is closingon a small pipe.

Ais the handle, provided with one or more pivot or bolt holes foradjustment to the diameter of the pipe to be gripped. The handle A has aprolongation b from the pivotal point of the links, which forms abearing, and is rounded at its end to conform to the movement of thegripping-tongue.

B B are the links or arms pivoted to the handle, as shown, and areprovided with serrations c, and C is the gripping-tongue, also providedwith teeth (Z. This tongue C is pivoted at the free ends of the arms orlink B, and turns inwardly in such manner that it passes between thearms or jaws of the links. The bearing or prolongation 1) is arranged tobear on the back of the tongue C and force it against the pipe, whilethe other side of the pipe is gripped by the jaws B B. The portion b issufficiently long to follow the movement of the tongue, by which thesmallest pipe oan be gripped. The links or jaws B B are also providedwith holes f, whereby they may be adjusted to a greater or less degreenecessary to the diameter of the pipe to be gripped. formed straight fora short distance at the ends pivoted to the handle, and from thence arecurved outwardly and inwardly, as shown, and the segmental grippingtongue or link 0 is pivoted at one end between the outer ends of links BB,'so as tobe free to swing. The curves of these links B B and tongue Care such that when the outer edge of the free end of the tongue 0 bearsagainst the toe or hearing end of the handle the inner edges of thelinks and tongue will form an approximate circle, as shown in Fig. 4:.The links B B at their opposite ends are pivoted on opposite sides ofthe handle and of the tongue C, hence leaving a space between said linksof sufficient width to allow the tongue to easily extend between thesame when a small pipe is being grasped. The teeth of the links andtongue are inclined in opposite directions, as

shown. This wrench is composed of a minimum number of parts, the onlyessential parts being the handle-bar, the two links B B, and the tongueC. The links B B are similar, and, with the tongue C, are preferablycomposed of fiat metal, as shown, so that all parts of the wrench can bestamped out with great rapidity by suitable dies. Hence all parts of thewrench are interchangeable and when broken can be easily replaced. Thegreat strength and durability of the article, the immense amount ofleverage obtained on the pipe, and the varied sizes of pipes that can begrasped being some of the points in favor of the Wrench.

The invention is simple in construction, cheap in first cost, andreadily operated. The parts are interchangeable, so that when eitherpiece is broken or out of order another can be substituted. It may bemade without serrations or teeth in the jaws, but it is pref erable tohave them.

It is evident that modifications may be The segmental links B B are IOOmade in severalof the parts without materially departing from the spiritof 'my invention.

Having thus described my invention and the manner of carrying the sameinto effect, what I claim as new, and desire to secure by LettersPatent, is-

l. The herein-described pipe-wrench, eonsistingof theintegral leverhaving the rounded end and transverse pivot-hole a short distance fromsaid end, the two similar gripping-links at corresponding ends pivotedto and on opposite sides of said lever at said hole, the outer free endsof said links being curved, as set forth, and the freely-swinginggripping-tongue at one end pivoted between the outer ends of said links,said tongue being curved to form a continuation of the curvature of saidlinks, and arranged to engage the opposite side of the pipe from saidlinks and have its outer edge engaged and forced in by the rounded endof said lever and the end of the tongue extending between said linkswhen forced in.

2. In a wrench, the combination of the straight integral lever having apivot-hole a short distance from one end, the pair of similar swingingfiat metal segmental links having serrations on their inner edges andhaving their inner ends straight, and provided with correspondinglongitudinal series of pivot-holes, for the purpose set forth, saidlinks at their straight ends pivoted on oppo- ANGEL A. PETERKIN.

Witnesses:

O. E. DUFFY, O. M. IVERLE.

